Check if s has proper noun capitalization.
Check if s starts with a capital letter followed by a lower letter.
Check if s starts with a capital letter followed by a lower letter.
Check if s lowercased, that is only contains lower-case characters.
Check if s is a lowercased ASCII string.
Return true if s has proper name capitalization, such as in "Africa" or "South Africa".
Check if s uppercased, that is only contains upper-case characters.
Check if s is an uppercased ASCII string.